NBT Quantitative Literacy Ratio and Percentage

Question 1

A recipe uses flour and sugar in the ratio 3:1. If you use 600g of flour, how much sugar do you need?

Accepted Answer

200g

Answer

The ratio 3:1 means sugar is one third of the flour. 600 / 3 = 200g of sugar.

Question 2

A jacket costs R800 and is discounted by 25%. What is the sale price?

Accepted Answer

R600

Answer

25% of R800 = R200 discount. Sale price = 800 - 200 = R600.

Question 3

A class has 18 girls and 12 boys. What is the ratio of girls to boys in simplest form?

Accepted Answer

3:2

Answer

18:12 divides by 6 to give 3:2, the simplest form of the ratio of girls to boys.

Question 4

A learner scored 36 out of 45 on a test. What is this as a percentage?

Accepted Answer

80%

Answer

36 / 45 = 0.8, which is 80%.

Question 5

A R1 200 deposit earns 8% simple interest in one year. How much interest is earned?

Accepted Answer

R96

Answer

8% of R1 200 = 0.08 x 1 200 = R96 interest.

National Benchmark Test (NBT) Practice Test